MANUAL OF THE GRASSES OF THE UNITED STATES 



245 



1. Aegilops cylindrica Host. Jointed goatgrass. (Fig. 476, 

 B.) Culms erect, branching at base, 40 to 60 cm tall ; blades 2 to 3 mm 

 wide ; spike cylindric, 5 to 8 cm long ; internodes of racbis 6 to 8 mm 

 long; spikelets 8 to 10 mm long, glabrous to hispid; glumes several- 



Figure 476. A, Aegilops triuncialis, X H. (Cole, Calif.) B, A. cylindrica, X H- (Bush 72148, Mo.) 



nerved, keeled at one side, the keel extending into an awn, the main 

 nerve of the other side extending into a short tooth; lemmas mucro- 

 nate, those of the uppermost spikelets awned like the glumes ; awns very 

 scabrous, those of the upper spikelets about 5 cm long, those of the 



